Theodor leonhard



@geiten tats itttltt @fitta IMPROVEMENT Ibi BLEAGHING VEGETABLE OILS.

alle Sfilata aftosa tu in tigen tettcts patent ma making gaat at tigesmite.

TO ALL WHOM I'l MAY CONCERN:

Be it known that I, 'liriconon LnoNuAnD, of Paterson, in the county ofPassaic, and State of New Jersey. have invented a new and improvedMethod of Bleaching Vegetable Oils; 'and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which willenable those skilled iu the art to make and use the same, referencebeing had to the accompanying drawings, forming part of thisspecification.

This invention relates to a new and improved method of treating linseedand other vegetable oils, in the process of bleaching and preparing thesame for paint and other purposes; and the invention consists inproviding for agitatng the oil by a revolving shaft, with open orperforated wings attached thereto, within the vessel which contains theoil, while the same is being heated by a fire or by steam underneath, aswill be hereinafter described. i

Figure l represents a top or plan view of the vessel with the agitatorattached thereto.

Figure 2 is a vertical section of the same through the line :e

Similar letters of reference indicate corresponding parts.

A represents an oblong vessel with a semicircular bottom, in whichvessel thc oil is placed. This semicireular vessel is supported byvertical sides and ends, B, as seen in fig. 2. It is placed upon asuitably. constructed arch, or other provision is made for applying heatto the same. In the centre of the vessel, extending longitudinallyacross it, there is a shaft, C, with wings, D, (more or less in numbcr,)the sweep of which describes a circle corresponding (or nearly so) withthe diameter of the circular bottom of the vessel. 'lhe wings l) may beformed in any convenient manner to produce the desired cil'ect. In thisexample of my invention tho wings-are composed of bars or rods, aportion of which are placed longitudinally with the vessel, und thebalance are placed at right angles therewith. In the drawing, two wingsare shown with the bars in the lutter position. Wings formed'ofperforated plates or of wire cloth would probably answer the samepurpose. The shuft is marked E, and it extends through the end of thevessel, so that a pulley or crank may be attached thereto. Y Frepresents a pulley on the end of the shaft, to which power may beapplied for revolving the agitator. G is a bevelled edge or lip aroundthe vessel, as seen in the drawing. v

It is well known that vegetable oils are bleached by being exposed tothc rays of light in glass vessels, and this method has hitherto beenresorted to for that purpose; but the action of the light upon thequiescent oil at the temperature of the atmosphere does not produce thedesired effect. I have discovered that by producing aconstant anduniform agitation in the oil while the saine is subjected to a'moderateheat has the desired effect, and that linseed oil designed for paintmay, by this treatment, be rendered fit for use in 'inside painting, bymixing it with a drier of my own composition, and which can be addedwhile the oil is in a cold state, at any time, without coloring orstaining it in the least, and without scorching or browning the oil, asis usually done by the ordinary process of boiling. l

Having thus 'described my invention, I claim as new, and desire tosecure by Letters Patent- '.lhc vessel A. Containing a revolving shaft,E, with wings D, or their equivalents, substantially as described, forthe purpose ot' bleaching und preparing vegetable oils. as set forth. i

THEODOR- LEONHARD.

Witnesses NATHAN luimun, Manus Connu.

